hashem barakat. he also oversaw the acquittal of former president hosni plu barack. al jazeera abdullah al shami shami has more. >> believe the explosion was set up by remote control. scattered better than debris over wide area. five others were injured. hashem baraka tfertionkak has referred members of the muslim brotherhood and others to trial. hundreds have been sentenced to death or life imprisonment as part of a crack downed in support of the muslim brotherhood. barakat has been assassinateed. ab lu al shami. al jazeera. >> one of mass killings and violence. killing is unacceptable and there is no way to end the bloodshed unless the military coup and the empowerment of revolution is broken. >>> joining me in studio is mahah mazar co-founder of the group egyptians. >> difficult to say i don't think anybody has claimed responsibilities they withdrew their responsibility to the act. it's one of many small groups or groups associated with activities in sinai. what was seen is an increase in the violence. we're seeing fringe groups emerge as we've seen before in the